Sun Oracle Storage Tek T10000, Reference Manual

Page: 281 / 296

E20425-01 • Glossary 263
Glossary
LIP See Loop initialization primitive.
LIRP Loop Initialization Report.
LIS_HOLD_TIME Loop Initialization Sequence
Hold time.
LISM Loop Initialization Select Master.
Login The FC-required process used by any
initiating N_Port or NL_Port in an FC fabric to
sign in with any other receiving N_Port or
NL_Port port with which it plans to communicate.
The signing in process provides the initiator with
critical information about the attributes of the
recipient port before it attempts to make a
connection with it.
Login_BB_Credit On an Arbitrated Loop, this
signal is the value equal to the number of receive
buffers that a recipient NL_Port guarantees to
have available once a loop circuit is established.
Login_BB_Credit is communicated via the
FLOGI, PLOGI, or PDISC Extended Link
Services.
Logout An Extended Link Services command
that terminates all open Exchanges with the
SCSI initiator and its target. LOGO is invokable
when originated by the initiator, requires a
response by the drive, required when originated
by the drive, and requires a response by the
initiator.
LOGO See Logout.
Loop initialization primitive Assigns up to a
possible 127 addresses to different ports on the
loop and builds a map of these addresses.
LPSM Loop port state machine.
LRC Longitudinal redundancy check.
LSB Least Significant Bit.
LS_RJT See Link Services Command Reject.
LUN Logical unit number. A SCSI device
address.
M
MB Abbreviation for megabyte (2
20
or 1,048,076
bits).
MB/s Abbreviation for megabytes per second.
Mb/s Abbreviation for megabits per second.
MB/sec Abbreviation for megabytes per
second.
Mb/sec Abbreviation for megabits per second.
Mode Select Command The command used in
Fibre Channel that specifies operational
parameters and options for a logical unit. The
fields that can be changed by the Mode Select
Command and what the default values are for
these fields.
MSB Most Significant Bit.
multi mode A graded-index or step-index
optical fiber that allows more than one bound
mode to propagate. Contrast with single mode.
multimode fiber An optical fiber designed to
carry multiple signals, distinguished by frequency
or phase, at the same time.
N
N_Port A Port within the node that attaches to a
link.
N_Port ID The identifier of an N_Port in a point-
to-point or fabric FC topology.
N_Port Login (PLOGI) The N_Port Login
command used in Extended Link Services. It is
required when originated by the initiator, requires
a response by a drive, and is prohibited when
originated by a drive.
Nanometers (nm) One billionth meters.
National Committee for Information
Technology Standards
Formerly the American
National Standards Institute (ANSI).
NCITS See National Committee for Information
Technology Standards.
Network An arrangement of nodes and
branches, connecting data processing devices to
one another via software and hardware links, to
facilitate information interchange.
NL_Port An N_Port within the Node which also
contains the Loop Port State Machine as defined
in FC-AL-2. The NL_Port attaches to either an
FL_Port or an NL_Port through a link.